Tsunami Warning Center Water Level Data Extract Service

High-resolution water level data collected by the Tsunami Warning Centers are available via GET requests to URLS like: https://www.ngdc.noaa.gov/waterlevel-external/tides/data/extract/<station_id>

Station ID List:

• 9411166: Ventura, CA
• 9450552: Craig, AK
• 9454759: Esther Passage, AK
• 9454779: Barry Arm North Shore, AK
• 9454793: Barry Arm Point Doran, AK
• 9454958: Whittier, AK
• 9457526: Old Harbor, AK
• 9458912: Chignik, AK
• 9460261: Shemya, AK
• 9460901: Amchitka, AK
• 9462693: Akutan, AK

Request Parameters:

• start
  • Starting time bound in ISO-8601 date format (YYYY-MM-DDTHH:mm:ssZ)
  • At least a date is required
  • Alternatively, use startdate and starttime
• end
  • Ending time bound in ISO-8601 date format (YYYY-MM-DDTHH:mm:ssZ)
  • Defaults to one week after start, if not provided.
  • Alternatively, use enddate and endtime
• resolution
  • Data down-sampling resolution: full (no averaging), minute, hour, day, month, or year
• format
  • Data format: json, xml, or csml (default)
  • The response to the GET request is always UTC timestamps and water level relative to station datum in units of centimeters.

Example:

https://www.ngdc.noaa.gov/waterlevel-external/tides/data/extract/9411166?start=2018-11-07T17:30:00Z&end=2018-11-07T18:30:00Z&resolution=minute&format=json